It's no propaganda. At the time Stihl was developing their 4 mix, there were no stratocharged 2 strokes. About the time Stihl was getting close to bringing them to market, Redmax came out with the strato engines, and they were able to meet and exceed EPA's BS regs. Stihl already had hundreds of millions invested in the 4 mix, but they bought over 100K starto engines from RM before deciding to go head since their investment in the 4 mix was so steep at that point. Simple as that. Now they know they can make a 2 stroke that will meet epa regs. Besides, many of us like the 4 mix engines because of their torque. They are easy to start and good on fuel. I run both types in my business, and each has its place.